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Finding the Fourth Proportional to 217,057.60, 325,440.60 and 115,872.40

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Solution

The fourth proportional to 217,057.60, 325,440.60 and 115,872.40 is: 173,730.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,057.60 : 325,440.60 = 115,872.40 : x
  2. Step 2: Convert to fraction form
    217,057.60/325,440.60 = 115,872.40/x
  3. Step 3: Cross multiply
    217,057.60x = 325,440.60 × 115,872.40
  4. Step 4: Simplify right side
    217,057.60x = 37,709,583,379.44
  5. Step 5: Solve for x
    x = 37,709,583,379.44/217,057.60
  6. Step 6: Final answer
    x = 173,730.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.